*{
    margin: 0;
    padding: 0;
}
ul,li{
    list-style: none;
}
html{
    height: 100%;
}
body{
    height: calc(100% - 50px);
    font-family: "open sans","Helvetica Neue",Helvetica,Arial,sans-serif;
    color: #999;
}
select{
    border: none;
    outline: none;
    width: 100%;
    height: 40px;
    line-height: 40px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-left: 80px;
    vertical-align: middle;
    box-shadow: 0 0 5px #ccc;
}
input{
    width: 170px;
    height: 40px;
    border-radius: 5px;
    box-shadow: 0 0 5px #ccc;
    border: 1px solid rgba(255,20,147,0);
    padding: 3px;
    vertical-align: middle;
}
#contents{
    height: 100%;
}
#pcontents{
    display: flex;
    height: 100%;
    position: relative;
    overflow: hidden;
}
#navi{
    background: #ccc;
    width: 300px;
    z-index: 15;
    background-color: #01bcff;
    background-image: url();
}
#navibtns{
    text-align: center;
    height: 100%;
    vertical-align: middle;
    display: table-cell;
}
#playspeed input{
    text-align: center;
    cursor: pointer;
    height: 2rem;
}
#score_back{
    z-index: 9;
    width: calc(100% - 300px);
    height: 100%;
    background: rgb(1,170,238);
    position: absolute;
    right: 0;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    -webkit-filter: blur(15px);
    -moz-filter: blur(15px);
    -o-filter: blur(15px);
    -ms-filter: blur(15px);
    filter: blur(15px);
}
#back_plate{
    width: calc(100% - 300px);
    background: rgba(244,244,244);
}
#toolbar{
    width: 100%;
    height: 50px;
    display: table;
}
.btn{
    padding: .5rem 1rem;
    border: 0;
    box-shadow: 0 0 5px #ccc;
    transition: .2s all;
    border-radius: .3rem;
}
.btn-info{
    background: rgb(0, 181, 229);
    color: rgb(244,244,244);
}
.btn-info:hover{
    background: rgb(10,210,250);
}
.btn-error{
    background: rgb(220,10,10);
    color: rgb(244,244,244);
}
.btn-error:hover{
    background: rgb(255,20,20);
}
.btn-warning{
    background: rgb(220, 171, 10);
    color: rgb(244,244,244);
}
.btn-warning:hover{
    background: rgb(250,200,30);
}
.btn-active{
    background: rgb(50,230,250);
}
.btn-active:hover{
    background: rgb(100,250,250);
}
.btn-success{
    background: rgb(30,220,0);
    color: #fff;
}
.btn-success:hover{
    background: rgb(53,255,0);
}
.headinline{
    display: inline-block;
}
.titleicon{
    float: left;
    display: flex;
}
#author{
    color: #555;
    font-size: 24px;
    font-weight: 550;
    padding-left: 1rem;
}
#dopause{
    display: none;
}
#dostop{
    display: none;
}
#docontinue{
    display: none;
}
.splayers{
    display: none;
}
.trackhead li{
    color: #ddd;
    padding: .5rem;
    margin: .5rem;
    border: 3px solid #f90;
    height: 100px;
    border-radius: .5rem;
    background: rgba(25, 25, 25, 0.5);
    box-shadow: 0 0 5px #F90;
    float: left;
    width: calc(100% - 40px);
    font-size: 20px;
    font-weight: 550;
    transition: all .3s;
    cursor: pointer;
}
.trackhead li:hover{
    box-shadow: 0 0 15px #F60;
}
#piano_code{
    border: 2px solid #F60;
    z-index: 50;
    position: absolute;
    left: 500px;
    height: 100%;
    display: none;
    box-shadow: 0 0 5px #F60;
}
#trackdetail{
    height: 100%;
    width: 100%;
    position: absolute;
    z-index: 10;
    left: 325px;
}
#trackdetail li{
    height: 100px;
    padding: .5rem;
    margin: .5rem;
    background: rgba(0,0,0,.5);
    border: 2px solid rgba(244,244,244,.5);
    border-radius: 5px;
    display: flex;
    box-shadow: 0 0 5px #ccc;
    transition: all .2s;
    margin-bottom: 1.2rem;
}
#trackdetail li:hover{
    box-shadow: 0 0 15px #ccc;
}
#trackdetail .note{
    text-align: center;
    width: 100px;
    color: white;
    line-height: 100px;
    font-size: 3rem;
    transition: all .5s;
    cursor: default;
    transition: all .2s;
}
#trackdetail .noteactive{
    color: rgb(10,210,250);
    font-size: 5rem;
}
#navi .trackhead{
    display: none;
}
#trackdetail{
    display: none;
}
.choseSelect{
    position: relative;
}
.choseSelect select{
    min-width: 10rem;
}
.choseSelect:after{
    width: 60px;
    height: 8px;
    position: absolute;
    left: 10px;
    top: 30%;
    pointer-events: none;
    font-size: 10px;
}
#choseMusical::after{
    content: "选择乐器";
}
#chosetone::after{
    content: "选择音阶";
}
#scoreslist::after{
    content: "选择曲谱";
}
